Suppose that the quantity of a good demanded is 75,000 units when its price is $100 and that the quantity demanded is 90,000 when its price falls to $90, ceteris paribus. What is the own price elasticity of demand for this good? Step 1: first we calculate the percentage ------ . Step 2: then we calculate the percentage ------ . Step 3: we divide ------ to get 2. Would that be 2 or 2